import json
import requests
import gradio as gr
from utils import is_valid_url, HEADER, EN_US

ZH2EN = {
    "输入长链接": "Input a long URL",
    "选择 API 提供商": "Select an API provider",
    "输出短链接": "Output short URL",
    "预览短链接": "Preview short URL",
    "将长链接转换为短的、易于共享的链接": "Convert long urls into short, easy-to-share links",
    "状态栏": "Status",
}


def _L(zh_txt: str):
    return ZH2EN[zh_txt] if EN_US else zh_txt


def noxlink(longUrl: str, domain="https://noxlink.net"):
    api = f"{domain}/zh-CN/shorten"
    response = requests.post(api, json={"longUrl": longUrl}, headers=HEADER)
    if response.status_code == 200:
        retcode = json.loads(response.text)
        if retcode["success"]:
            return f"{domain}/" + retcode["message"]

    raise ConnectionError(response.text)


def monojson(longUrl: str):
    response = requests.post(
        "https://monojson.com/api/short-link",
        json={"url": longUrl},
        headers=HEADER,
    )
    if response.status_code == 200:
        return json.loads(response.text)["shortUrl"]
    else:
        raise ConnectionError(response.text)


# outer func
def infer(longUrl: str, tool: str):
    status = "Success"
    shortUrl = preview = None
    try:
        if tool == "monojson":
            shortUrl = monojson(longUrl)
        elif tool == "noxlink":
            shortUrl = noxlink(longUrl)
        else:
            raise ValueError("请选择一个 API 提供商!")

        if is_valid_url(shortUrl):
            preview = f'<a href="{shortUrl}" target="_blank">{shortUrl}</a>'

    except Exception as e:
        status = f"{e}"

    return status, shortUrl, preview


def url_shortner():
    return gr.Interface(
        fn=infer,
        inputs=[
            gr.Textbox(
                label=_L("输入长链接"),
                placeholder=_L("将长链接转换为短的、易于共享的链接"),
            ),
            gr.Dropdown(
                choices=["noxlink", "monojson"],
                label=_L("选择 API 提供商"),
                value="noxlink",
            ),
        ],
        outputs=[
            gr.Textbox(label=_L("状态栏"), show_copy_button=True),
            gr.Textbox(label=_L("输出短链接"), show_copy_button=True),
            gr.HTML(
                container=True,
                show_label=True,
                label=_L("预览短链接"),
            ),
        ],
        flagging_mode="never",
        examples=[
            ["https://www.bing.com", "noxlink"],
            ["https://www.baidu.com", "monojson"],
        ],
        cache_examples=False,
    )